Spell Resistance

Spell Resistance

Spell Resistance (SR) is a special anti-spell defense possessed by some creatures. Spell Resistance is an additional layer of defense against most non-damaging magical attacks, in that it adds an extra roll that the caster has to make for his magic to "land" on that target.

Spell Resistance only matters if the spell's creature actually has it, and the spell being cast is one that can be stopped by Spell Resistance. In DDO, spells that most purely cause damage ignore Spell Resistance.

The most common creatures with Spell Resistance will be Drow, Duergar, Devils, anything with "Fiendish" in the name and some bosses. (Anticipate spell Resistance to be at least CR plus 10 for regular monsters. Red and purple named bosses tend to have a much higher CR, and generally have spell resistance within 0-5 points of their CR.)

Player characters can gain spell resistance as an alternative / in addition to having high saving throws. Spell Resistance is particularly useful against spells and abilities which don't offer a saving throw, such as gaze of umber hulks or many beholder ray attacks.

Monster spell penetration roll is usually 1d20 + CR[Unverified"usually 1d20 + CR" has not been verified in-game. Please verify it!]. Therefore, having SR above monster CR+20 should protect you against all spells and effects with SR check.